Apparatus for reducing coal.



H. ADAMS.

APPARATUS FOR REDUCING GOAL. 7

APPLICATION FILED SEPT. 20. I915.

mw w, Patented Feb.11,1919.

ooooooo Q 000 WIT/V588 INVENTOI? may 'j AT IVEVS ducing Goal, of

Stamford, county of mnrnn nan onmon.

HENRY ADAM$, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE ADAMS MINING MACHINERY OORPORA OF NEW YORK.

ION, OF NEW LONDON, CONNECTICUT, A CORPORATION nrrenarus roa'nnnucme CUAL.

Application filed ee tember a, 1915. serial in. 51,563.

To all whom it may concern Be it known that I, HENRY ADAMS, a citi-' f zen of the United States, and a resident of Connecticut, have invented certain new and useful Improvements in Apparatus for Re which the following is a; specification, reference being bad to the accompanying drawings, which form a part hereof.

This invention relates to a new and improved apparatus for reducing coal as it comes from the mine into commercial sizes without the employment of crusher rolls heretofore in general use for reducing coal whereby the. disadvantages attendant upon the use of said crusher rolls for such purpose are obviated. The invention also relates to grading the coal thus reducedand separating it into the various commercial sizes. And such invention is a modification of and improvement on that set forth, de scribed, and claimed in my copending application, Serial No. 51,562, filed Sept. 20, 1915, simultaneously with thefiling of this application.

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In accordance with the present invention the coal, preferably egg or somewhat smaller size is delivered to a centrifugal table from which it is hurled with great force against a breaking face whereby the coal is broken or shattered into smaller pieces of varying sizes. The table is provided with apertures in its margin of such size as to permit the smaller 'bIOkBlll pieces to pass therethrough after rebounding from the breaking face but to retain the largest broken pieces of the coal to be again hurled by the table against the breaking face and broken into smaller pieces. The coal broken on the breaking face is thus substantially free from pulverizing or breaking concussion and attritionbetween the largest and the smaller broken pieces. Coal broken and treated in the manner described is remarkably free from the internal fractures that characterize coal that has been reduced in a crusher. The sudden violent blow imparted to the lumps of coal by the breaking face against Which they are hurled shatters them into fragments or pieces but in large measure leaves the broken pieces free from these internal fractures and Specification of Letters Patent.

Fairfield, and State of.

of such coal in the furnace ranged outlets 5 Patented Feb. llil, T919.

structurally strong. This coal may, thereore, be handled and shipped without suffering any such degradation of size' and loss noticeable absence of flatness in the steam sizes as compared with coal of corresponding sizes produced in a crusher, so that in the former the voids are increased some three and one-half per cent. This is an important advantage because it substantially facilitates the passage of air through the bed and obviates or reduces the need of forced draft.

Furthermore, in operating the apparatus of the present invention, it is possible to control to a substantial degree the production of the smaller sizes. This may be done by increasing or decreasing the force with which the coal is hurled against the breaking face. The greater this force is, within limits, the greater is the proportion of the smaller sizes produced. way of bringing about the desired result is to increase or decrease the speed of the centrifugal table. The breaking face is preferably provided with a multiplicity of pins -or studs against which the lumps of coal vertica shaft 2 designed to be supported in suitable bearings and driven by an electric motor or other convenient type of motor. The upper face of the table is provided with a plurality of fixed radial'wings 3 and the coal to-be operated upon is delivered upon the table through a. hopper 4, which, as shown in the drawings, has oppositely ar- One convenient tltl Surrounding the table and in close proximity thereto is a breaking face 7 against which the coal is hurled. In the present in-. stance this breaking face comprises a series of anvils which rest upon a suitable base 10. In the inner side of the breaking face are fixed a series of pins or studs 8. These are shown in the drawings as being threaded so as to screw into place and be separately re-' movable either for repair or for varying the number of studs in the breaking face; 9 is a cover for the breaking face. is provided around its margin with apertures 11 which may 'be in the form. of slots, as shown.

Fixed beneath the table is a plurality of guides for receiving and conducting away the broken pieces of coal as they fall through the table. 12, 13 and 14 are such guides on one side of the table and these .guides deliver the broken coal to a shaking separator 15. 16, 17 and 18 are. such guides on the opposite side of the table and deliver the broken coal to conveyors 19, 20 and 21 which, in turn, deliver such coal to the separator 15. The breaking face 7 has diametrically disposed openings therein. These openings are provided with delivery guides 22 and 23. These openings and guides are so located with respect to the hopper out-- lets 5 and 6 that the coal is delivered from the outlets to, portions of the table immediately after such portions have passed the guides 22 and 23. These openings in the breaking face are designed to permit the escape from the table of such slate, bone or rock and other impurities that may be in the coal. Such foreign material is too hard to be broken by the same blow that shatters the coal and is carried around on the centrifugal table and escapes through the openings in the breaking face and along the guides 22 and 23.

In the operation of the apparatus the coal in egg or somewhat smaller size is delivered from the hopper outlets 5 and 6 on opposite sides of the center of the table where it is caught by the wings 3 and carried around with the table. The centrifugal force thus imparted to the coal throws it outward with great force against the breaking face whereby it is broken into smaller pieces of varying sizes. A substantial proportion of these smaller broken pieces, rebounding from the breaking face back upon the table, will be of such size as to permit them to pass through the apertures 11 of the table and to be delivered by the guides either directly or through the intermediation of the conveyers to the shaking separator 15. Some of the broken pieces will be of a size too large to pass through the apertures 11 of the table. Such large pieces rebounding from the table upon the breaking face Wlll be again thrown outward The table 1 'venlent means against the breaking face and broken into smaller pieces of a size suficient to pass through the apertures 11. The breakage of the'coal delivered from the outlet 5 and its passage through the apertures 11 of the table begins just beyond the delivery guide 22 and is completed before the coal can be carried around as far as the delivery guide 23. In the same way the coal delivered by the outlet 6 upon the table and its passage through the apertures 11 of the table begins just beyond the delivery guide 23 and is completed around as far as the delivery guide 22. The rock, bone and slate is too hard to here"- duced by the blows which reduce the coal and is carried around by the table until they reach the delivery guides 22 or 23 through which they escape due to the centrifugal action of the table. It will be seen that the passage of the smaller pieces of broken coal through the apertures 11 of the tableimmediately separate them from the larger pieces which may require again to be thrust against the breaking face so that such'smaller piecesare substantially free from pulverizing andbreaking concussion and attrition between the largest and the smaller broken pieces and waste is reduced to a! minimum. The impact of the coal against the breaking face may be regulated by varying the speed of the table, any conbeing employed for this purpose.

What I claim is:

1. In an apparatus for reducing coal to commercial sizes, the combination of a rotary table; a breaking-anvil substantially surrounding said table and provided with a large delivery opening therein; and means adapted to direct coal on said table in a direction away from said delivery opening.

2. In an apparatus for reducing coal to before the coal can' be carriedcommercial sizes, the combination of a ro- I tary table provided with openings in its marginal portion; an annular breakinganvil substantially surrounding said table and provided with two oppositely disposed large delivery openings therein; and means adapted to direct lumps of coal on said table somewhat in advance of said delivery openings on the side. thereof toward whichthe table is rotating.

3. In an apparatus for reducing coal to commercial sizes, the combination of a rotary-table; wings on said table; and a breaking-anvil substantially surrounding said table and provided with a large delivery opening in the peripheral wall thereof; and means adapted to direct the material on said table in adirection away from the said openmg.

a. In an apparatus for reducing coal to commercial sizes, the combination of a rotary table; wings on said table; a breakingnaeaeaa anvil substantially surrounding said,table and provided with a large delivery opening; and a hopper disposed above said table and adapted to direct lumps of coal somewhat in advance of said delivery opening on the side toward which the table is rotating.

5. In an apparatus for reducing coal to commercial sizes, the combination of a centrifugal horizontal plane-faced throw-table; radial wings on the intramarginalportion of said'table; and a breaking-anvil substantially surrounding said table with a large delivery opening through which the larger particles of coal are delivered. I

6 In an apparatus for reducing coal to commercial sizes, the combination of a circular rotary table provided with elongated radial openings in its marginal portion; radial wings on the intra-marginal portion of said table; a breaking-anvil substantially surrounding said table and provided with inwardly pointing studs and a. large 'delivery opening; and a hopper disposed above said table and adapted to direct lumps of coal somewhat in advance of said delivery opening on the side toward which the table is rotating. 7. In an apparatus for reducing coal to commercial sizes, the combination of a circular rotary table provided with elongated radial apertures in its marginal portion; radial wings on the intra-marginal portion of said table; a breaking-anvil substantially surrounding said table and provided with inwardly projecting studs and a pair of large diametrically oppositely disposed delivery openings; and a hopper disposed centrally above said table and provided with oppositely disposed outwardly directed outlets pointing somewhat in advance of said delivery openings relative to the direction of rotation of the. table.

In an apparatus for reducing coal to commercial sizes, the combination of a rotary table; a breaking anvil substantially surrounding said table provided with a large and providedside toward which the table is rotating.

10. In an apparatus forreducing coal to commercial sizes, the combination of a circular rotary table provided with elongated radial openings in its marginal portion; radial wings on the intra-marginal portion of said table; a breaking anvil substantially surrounding said table and provided with inwardly pointing studs and a large delivery opening; and a hopper disposed above said table and adapted to direct lumps of coal somewhat in advance of said delivery opening on the side toward which the table is rotating.

11. In an apparatus for, reducing coal to commercial sizes, the combination of a circular rotary table provided with elongated radial apertures in its marginal portion; radial wings on the intra-marginal portion of said table; a breaking anvil substantially surrounding said table and provided with inwardly projecting studs and a pair of large diametrically oppositely disposed delivery openings; and a hopper disposed centrally above said oppositely disposed outwardly directed outlets pointing somewhat in advance of said delivery openings relative to the direction of rotation of the table.

This specification signed this 18th day of September A. D., 1915.

HENRY ADAMS.

table and provided with 

